<template>
  <header class="header">
    <!-- 头部的第一行 -->
    <div class="top">
      <div class="container">
        <div class="loginList">
          <p>尚品汇欢迎您！</p>
          <p v-if="!userName">
            <span>请</span>
            <router-link to="/login">登录</router-link>
            <router-link to="/register" class="register">免费注册</router-link>
          </p>
          <p v-else>
            <a>{{ userName }}</a>
            <a class="register" style="cursor: pointer" @click="logout"
              >退出登录</a
            >
          </p>
        </div>
        <div class="typeList">
          <a @click="$router.push('/trade')">我的订单</a>
          <a @click="$router.push('/shopcart')">我的购物车</a>
          <a href="###">我的尚品汇</a>
          <a href="###">尚品汇会员</a>
          <a href="###">企业采购</a>
          <a href="###">关注尚品汇</a>
          <a href="###">合作招商</a>
          <a href="###">商家后台</a>
        </div>
      </div>
    </div>
    <!--头部第二行 搜索区域-->
    <div class="bottom">
      <h1 class="logoArea">
        <router-link class="logo" to="/home">
          <img src="./images/logo.png" alt="" />
        </router-link>
      </h1>
      <div class="searchArea">
        <form action="###" class="searchForm">
          <input
            type="text"
            id="autocomplete"
            class="input-error input-xxlarge"
            v-model="keyword"
          />
          <button
            class="sui-btn btn-xlarge btn-danger"
            type="button"
            @click="goSearch"
          >
            搜索
          </button>
        </form>
      </div>
    </div>
  </header>
</template>

<script>
export default {
  data() {
    return {
      keyword: "",
    };
  },
  watch: {
    // eslint-disable-next-line no-unused-vars
    $route (newVal, oldVal) {
      if(newVal.query.keyword == ''){
        this.keyword="";
      }else{
        this.keyword = newVal.query.keyword;
      }

      
    },
  },
 computed:{
    //用户名信息
    userName(){
      return this.$store.state.user.userInfo.name;
    }
  },
  methods: {
    goSearch() {
      //第一种字符串的形式传参,但是路由里面的path需要这样写/search/:keyword(不常用),然后页面通过$route.params.keyword(路由:后面你自己取得名字)获取
      // this.$router.push('/search/' + this.keyword);
      //第二种方法需要在路由中加name 或者直接写path
      let query ={keyword:this.keyword}
      //判断:如果路由跳转的时候已经存在query参数就与当前的query参数拼接
      if(this.$route.query){
        query = {...this.$route.query, ...query}
      }
      this.$router.push({
        path: "/search",
        query
      });
    
    },
    logout(){//退出登录
      this.$store.dispatch("userLogout").then((res) => {
        if(res.code==200){
          this.$router.push({ name: '/login' });
        }
      });
    }
  }
};
</script>

<style scoped lang="less">
.header {
  & > .top {
    background-color: #eaeaea;
    height: 30px;
    line-height: 30px;

    .container {
      width: 1200px;
      margin: 0 auto;
      overflow: hidden;

      .loginList {
        float: left;

        p {
          float: left;
          margin-right: 10px;

          .register {
            border-left: 1px solid #b3aeae;
            padding: 0 5px;
            margin-left: 5px;
          }
        }
      }

      .typeList {
        float: right;

        a {
          padding: 0 10px;

          & + a {
            border-left: 1px solid #b3aeae;
          }
        }
      }
    }
  }

  & > .bottom {
    width: 1200px;
    margin: 0 auto;
    overflow: hidden;

    .logoArea {
      float: left;

      .logo {
        img {
          width: 175px;
          margin: 25px 45px;
        }
      }
    }

    .searchArea {
      float: right;
      margin-top: 35px;

      .searchForm {
        overflow: hidden;

        input {
          box-sizing: border-box;
          width: 490px;
          height: 32px;
          padding: 0px 4px;
          border: 2px solid #ea4a36;
          float: left;

          &:focus {
            outline: none;
          }
        }

        button {
          height: 32px;
          width: 68px;
          background-color: #ea4a36;
          border: none;
          color: #fff;
          float: left;
          cursor: pointer;

          &:focus {
            outline: none;
          }
        }
      }
    }
  }
}
</style>